Go to settings >application > Play Store >Clear Data & Clear Cache.
Go to accounts >Google >Remove account.
Reboot device.
Details here :
http://wikitechsolutions.com/1222/error-while-retrieving-information-from-server-rpc-s-3-aec-and-rpc-7-aec-0
SOURCE: I have a Motorola I1 android with Telus as a
Hi Andrew, I have the exactly same problem, started last night... i almost did hard reset and then i see that you the same problem on the same day... maybe it's a "Market" issue??
i also have two updates available, and when i try to run the update i get the same "installation error" and the app turn to "free" instead of the "update available", when in fact the app is still there (installed)...
Avi (i1)
SOURCE: cannot download apps from android
I wrote this tip some time ago. I did it based in on my Motorola Defy phone, running Froyo, but I do hope it might work for you, somehow.
Anyway, please, let me know if I can help you outt any further.
Regards,
Carlos
Did your tablet come with the market app already installed? If so go to settings>Accounts & sync. You must use the original username and password of the Google account (if you don't have a gmail account set one up and make a note of the username and password. You don't actually have to use Gmail for your email activities, but you do need one to set your tablet up properly for market usage!) used when you set up your android tablet. If (as I suspect) your tablet was not cleared by the original owner before they sold it on Ebay, you'll need to restore the tablet to its factory settings and start as if it just came out of the box.
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